Nozzles for water hose



1957 G. JOHNSTON 2,804,338

NOZZLES FOR WATER HOSE Filed Jan. 16, 1956 n :w HIE 23 INVENTOR.

Greenhow Johnston A'rrvs United States Patent NOZZLES FOR WATER HOSE Greenhow lohnston, Richmond, Va., assignor to Temple Safety on Sea Mfg. Co. lnc., Richmond, Va., a corporau'on of Virginia Application January 16, 1956, Serial No. 559,263

11 Claims. .(Cl. 299-59) This invention relates generally to water discharging devices and is directed more particularly to improvements in nozzles for water hose.

In the operation of certain types of equipment, such as fire engines, for example, it frequently is necessary to obtain the water supply from a pond, stream or other source where there may be debris or floating matter in the water which, when drawn up and discharged through a fire hose, would either clog the hosev nozzle or interfere to a great extent with the free ejection of water therefrom.

In view of the foregoing, it is a particular object of the present invention to provide a means whereby the nozzle of a hose, particularly a fire hose, used in locations where debris might enter the hose as hereinbefore stated, is constructed in a novel manner to break up any matter which may tend to stick therein so that such matter will be freely ejected with the water and the proper discharge of water from the nozzle can take place.

Another object of the invention is to provide a device which may be readily installed in a hose nozzle and which is so designed that the flow of water through the nozzle will impart a particular motion to the device which will result in the obtaining of the desired action of preventing the nozzle from becoming clogged.

Still another object of the invention is to provide a hose nozzle cleaning device which can be readily installed in the hose nozzle and which is designed so as to be rotated therein by the action of the water passing therethrough, whereby the nozzle will be kept clean.

A further and more specific object of the invention is to provide a nozzle cleaning device in the form of a spiral blade which is adapted mile in and extend through the length of the nozzle and which is provided at its inner end with lateral blades or wings against which the water passing through the hose into the nozzle will exert pressure to effect the rotation of the device, such rotation being assisted by the spiral formation of the device.

Still another object of the invention is to provide a nozzle cleaning device which is designed to rotate within the nozzle and wherein the nozzle is formed to cooperate with a portion of the device so that as the device rotates, it will be given a slight back-and-forth movement on the axis of the nozzle to further bring about the dislodgment of any material which may tend to stick in the nozzle. p

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing with the understanding that the invention is not confined to a strict conformity with the showing of the drawing but may be changed or modified in minor details so long as such changes or modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawing:

Fig. 1 is a longitudinal sectional view through an end gra ns Patented Aug. 27, 1957 ice portion of a hose and a nozzle secured to such end portion and showing in the nozzle, in elevation, the cleaning or clogging preventing device of the present invention,

the device being in this view engaged on the high point se and showing the same before the outer end or tip is bent over, the bent over position of the tip being indicated in dotted lines.

Fig. 4 is a view in perspective of the inner end portion of the nozzle showing the cleaner actuating cam.

Referring now more particularly to the drawing, the numeral 10 generally designates an end portion of a pipe which may be a rubber or fabricated hose pipe or a pipe formed of metal or any other desired material.

The numeral 12 generally designates a nozzle constructed in accordance with the present invention and which is here shown as having one end fitted into the end of the pipe 10. The nozzle and pipe may be secured together in any suitable manner either by a clamp of conventional type, which is generally designated 14, or the pipe may be of rubber or composition material or if the pipe is of metal, the nozzle may be secured in the end thereof by brazing or by screw threads or any other desirable matter.

The nozzle 12 comprises a long tubular body 16 having the internal bore 18 of .constant diameter throughout. The inner end of the body 16 has the fiat face 20 which is .interrupted by .the longitudinally extending rounded projection 21 which forms a cam for the purpose hereinafter set forth.

Formed for extension through the nozzle is a cleaner unit which is generally designated 22 and which is designed or constructed in a manner, as hereinafter pointed out, to have rotary motion imparted to it by a stream of water passing through the nozzle.

The unit 22 comprises a long strip of metal 23 which initially is flat and ribbon-like in character. At one end, the body 23 or strip of metal is reduced in width or tapered off and rounded as indicated at 24. The body 23 is initially, through the major portion of its length, of a width approximately equal to or slightly less than the inside diameter of the bore or passage 18 and the overalllength of the body 23 is initially materially greater than the overall length of the bore, whereby the cleaner body may be installed therein in the manner about to be described.

The inner end of the body 23 is joined to a cross blade 25 and the end portions of this cross blade are turned at right angles to form the fins 26 which are directed oppositely with respect to the plane of the blade 25 as shown in Fig. 2. As shown in Fig. 1, the blade has a width somewhat greater than the width of the body 23 and there are thus formed the shoulders 27 which, when the device is in operative position in the nozzle, extend across and oppose the surface 20 of the nozzle body.

The blade body 23 is axially twisted to assume the form of a spiral which is here shown as having approximately one and a half convolutions. A full convolution of the spiral is shownin Figs. 1 and 3 and designated28, the inner end of which joins a half convolution 28a while the outer end joins a terminal convolution 28b.

The cleaner unit is positioned within the bore 18 of the nozzle as illustrated, to extend lengthwise therethrough. When in position, the end of the body 23 having the blade 25 as a part thereof is at the inner end of the nozzle body and the outer tapered end 24 of the body 23 extends beyond the forward or discharge end of the When astream of water istfortzedthrough the 'pipe10 andvthehnozzle 12,- it will,zthrough"contact withthe ifins 26 and the surfaces of: the convolutions 28; 28a:andi28b,

cause the unit 22 to rotate on its axis. This rotary action of the unit will;scrape;awaysanyesubstance whichmmay adhere'to the surface of thejnozzle bore andthe. material scraped away will be ':.prevented from :a'dhering 1 to :'the

rotary unit by the action of the water passingrthereover and also by'thefijarrirlg action which'willbe; imparted to the unitrby reason ::of;thecpassage:of the :shoulders 27 passing over .the cam 21; The out flowing water will,

of course,strike the innerisideof.thertonguet24a andtend to move the unit axiallysoutwardly, and, therefore, as

the unit .turns, :the: shoulders '27 will first ride against the, surface 20 and then. over rthe'canr2l :and off ofthe cam back onto the :surfaceg20'tor-thus give the'ldesired back-and-forth movement 'tothe unitwhileit is'being rotated. V

Fromxzthe foregoing, "it willibe'seen that-theresisl provided bythepresent invention alnew and effective means for maintaining a hose or pipe. DOZZIUClGaHaHd fICe-Of clogging whensthe water passing therethroughhas been drawn from any sourcewhere clogging material maybe picked up. i i

I- claim:

1. A device for installationsinra tubular member: such as ahose nozzle,.said device comprising;an:elongaterellatively thin strip of material. having aflat blade'zat and extending across oneend, saidz blade being coplanarwith the attached end of the strip and extendinglbeyond "both longitudinal edges of the strip, a finintegral'with each side edge of said blade, said i fins beingi oppositely directed, said strip of spiral :form and tapered: at the other'end thereof. I 1

2. A device of the character. statedrin claim 11," wherein said fins comprise integral turned portions-of the 'blade and are at right angles torthelblade.

3. A'hose 'pipenozzlerand:cleaner-therefor, comprising a tubular member, a thin strip unit extending through the tubu1ar membergand'ha'ving awidth approximating the :inside diameterv of V the member, L means for retaining the unit against escape from the member, means whereby axial rotation wi1l be imparted toithe unitby fiuid flowing through the rmember, land gmeans for effecting limited reciprocatory movement to nthe' u nit duringzsa'id rotation.

4.The invention according to claim 3', whereinsaid strip'unit is-ofspiral form.

5. 1 A I hose pipe noz 'zle -an'd cleaner therefor; comprising a tubular member, althinistrip' unitext'e'n'ding through theltubularmember and'having a width approximating the inside diameter ofuthe member,means for reta'in'ing the Junit against escape from Lthe member, comprising lateral extensions upon one1end of the strip which extend across the e'ndnoflthetnozzlegwhich is =attached'to a pipe, means whereby a stream of fluid passing through the nozzle :will' impart axial rotation to the'unit, and means on: the said one end. of thenozzle for engagemenfbysaid lateral extensions during rotation of the unit for 3 imp arting limited reciprocatoryi movement to :the. unit.

6. A hose'pipe nozzle and cleaner therefor, comprising a tubular member having oneend for connection with last HICQIISTCOIIIPIlSGS angulatedxfins: extendingfrom the sidesedges rof saidnblade :and a spiral configuration of .4, a hose pipe, said end having a circular flat surface interrupted by a rounded elevation forming a cam, an elongate relatively thin cleaner strip extending through the tubular member and extending beyond the ends thereof, a flat blade forming a part of the end of said strip at the said one end of the tubular member, said blade projecting at both sides beyond the side "edges of the strip forming shoulders overlying-said circular flat surface, said strip at the. other end thereof having a terminal portion extended laterally across the other end of the tubular member and coacting with the shoulders to permit the strip to have limited longitudinal movement in the tubular member said cleaner strip having a width approximating the inside diameter of the tubular member, and means forming a partof the strip 'for effecting rotation thereof under the influence of fluid flowing through the tubular member, said cam being overridden by the shoulders in the rotationaof thestrip'totefiect reciprocal movement of the strip. 7

7. The invention according to claim 6, wherein the last means-(comprises,angulatedvfins extending from the sideedgeszof-saidmlades.

Therinvention according'togclaim 6, wherein the "last means .c'omprises a: spiral configuration of the strip. 9. The-invention accordingxtoclaim6, wherein the the strip. 7

l0, A hose:pipeznozzle and cleaner therefor; comprising a tubular member having an end for connection with apipe, an: elongate spiral member withinrand extending thr'oughzthe :lengthtof the tubular membenisaid spiral member having :a "laterally bent" end portion overlying impart-1a: corresponding end of the tubular member, and a:blade;formed on the opposite end'of said spiralmember of greater width than the spiral intermediate portion of the spiralmember'. and overlying inpart its correspond ingendof the tubular member whereby said blade at oneend of the lspiralxlmemberrand the laterally bent end portion'at the othertend :of the spiral member maintain said. spiral member: axially-rwithin-saidtubular member.

11. A hose pipenozzle andxcleaner'therefor, comprisinga tubular member'having an end for connection with afpipe, a cleaner member within and extending'through the" length of said tubularmember, said:cleaher:member having an intermediate'bodyportion extending through saidtubular member'and formed of. a flat 'metallic' spiral strip,'the cleaner member havingza blade'formedat one endthereofr'integralwith'saidspiral main body portion and: of a width? greater than such main body portion to be disposed wholly .outside said tubular member and overlying theiassociated end of the tubular member, and

said ac'leaner member having its opposite 'endrprovided vReferences Citedin thefile of this patent UNITED 'STATES PATENTS 1,093,006. Nelson -Apr. 14, 1914 r 1,391,766 Donovan Sept. 27, 1921 2,628,864 Rogers Feb.'17, 1953 FOREIGN PATENTS 115,247 'Germany l Dec. 7, 1900 in W- 

